I played with a 5'8" keeper who was released from Southampton aged 18 as he was deemed too short.
He had a leap on him that was incredible and hands like shovels, couldn't be knocked off the ball in the air, and was as quick as lightening off his line.
He was a combined services keeper and also a combined services basket ball player, probably the best keeper I played with.
Unfortunately, it was the 70s and you needed to be big whatever position you played to make it in the pro game. The absolutely worst time for English football.